When I launch the game everything runs well until about 3-5 min in, when it freezes. The game freezes if I'm playing, during a cut-scene, or even in the menu changing settings (before loading a saved game). There is no error, just a frozen image of whatever I was doing. I cannot alt-tab, alt-ctrl-delete, or shift-ctrl-Esc out, I must reboot the computer. I have played the game through on this same rig when it first came out, no issues. I re-installed recently (steam). At first I would get this issue about every third time I launched the game, now it happens every time. I have read and followed the 'solutions' sticky thread, no joy. Other games work fine.
My setup:
i7 920
6Gb Ram
ATI Hd6970
All @ Stock speed.